3b519578c5
Convert gui/src/firstrun.rs to a module dir with watchdog.rs, the pure-logic WatchdogState helper that the GTK widget code in Task 2 will poll. Three unit tests cover fresh/expired/poke transitions. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
56 lines
1.3 KiB
Rust
56 lines
1.3 KiB
Rust
//! Tracks the last-activity timestamp; the GTK timer queries this each tick
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//! to decide whether 60s of idle has elapsed.
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use std::time::{Duration, Instant};
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pub(crate) struct WatchdogState {
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last_activity: Instant,
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timeout: Duration,
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}
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impl WatchdogState {
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pub fn new(timeout: Duration) -> Self {
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Self {
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last_activity: Instant::now(),
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timeout,
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}
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}
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pub fn poke(&mut self) {
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self.last_activity = Instant::now();
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}
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/// True iff `timeout` has passed since the last poke. Once expired,
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/// stays expired until the caller drops + recreates.
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pub fn expired(&self) -> bool {
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self.last_activity.elapsed() >= self.timeout
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn fresh_state_is_not_expired() {
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let w = WatchdogState::new(Duration::from_secs(60));
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assert!(!w.expired());
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}
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#[test]
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fn zero_timeout_is_immediately_expired() {
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let w = WatchdogState::new(Duration::from_millis(0));
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std::thread::sleep(Duration::from_millis(2));
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assert!(w.expired());
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}
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#[test]
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fn poke_resets_the_clock() {
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let mut w = WatchdogState::new(Duration::from_millis(100));
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std::thread::sleep(Duration::from_millis(150));
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assert!(w.expired());
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w.poke();
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assert!(!w.expired());
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}
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}
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